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EXAM REVIEW – SCH4U
UNIT 1 - ORGANIC CHEMISTRY
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11. (a) Draw condensed structural diagrams for five
isomers with the molecular formula C6H12
(b) Draw line structural diagrams for five new isomers that also have the molecular formula C6H12. Include one pair of cis-trans isomers.
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UNIT 2 – ENERGY CHANGES AND RATES OF REACTION
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UNIT 3 – CHEMICAL SYSTEMS AND EQUILIBRIUM
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19. Calculate the molar solubility of zinc hydroxide at 25°C, where Ksp is 7.7 x 10-17. 20. If 150 mL of a 0.200 mol/L CaCl2(aq) and 150 mL of 0.05 mol/L Na2SO4(aq) are mixed at 20°C, determine whether a precipitate will form. For CaSO4(aq) at 20°C, Ksp is 3.6 x 10-5. 21. What is the molar solubility of PbCl2(s) in a 0.4 mol/L NaCl(aq) solution at SATP? 22. In titration of 30.00 mL of 0.400 mol/L HC2H3O2(aq) with standardized 0.400 mol/L NaOH(aq), what is the amount of unreacted HC2H3O2(aq) and the pH of the solution:
a) before titration begins b) during titration but before the equivalence point (15.00 mL of 0.400 mol/L NaOH(aq) added) c) at the equivalence point (30.00 mL of 0.400 mol/L NaOH(aq) added
23. A 1.0 L buffer is prepared that contains 0.40 mol/L acetic acid and 0.40 mol/L sodium acetate at equilibrium. a) calculate the pH of the buffer b) If 0.10 mol of H+
(aq) is added to the buffer without changing its volume, calculate the pH. Assume no volume change. c) Compare the change in pH to the change expected if the same amount of H+
(aq) is added to water to make a 1.0 L solution.
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UNIT 4 - ELECTROCHEMISTRY
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UNIT 5 – STRUCTURE AND PROPERTIES
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